Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1155196 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR30568500.fastq.gz | Fastqsanger.gz | |||
| SRR30568501.fastq.gz | Fastqsanger.gz | |||
| SRR30568502.fastq.gz | Fastqsanger.gz | |||
| SRR30568503.fastq.gz | Fastqsanger.gz | |||
| SRR30568504.fastq.gz | Fastqsanger.gz |
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Project description:Scaphoideus titanus transcriptome sequencing
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Project description:Scaphoideus titanus, genomic and transcriptomic data
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Project description:Flavescence dorée is the most serious grapevine yellows disease in Europe. It is caused by phytoplasmas which are transmitted from grapevine to grapevine by the leafhopper Scaphoideus titanus. Differences in susceptibility among grapevine varieties suggest the existence of specific genetic features associated with resistance to the phytoplasma and/or possibly with its vector. In this work, RNA-Seq was used to compare early transcriptional changes occurring during the three-trophic interaction between the phytoplasma, its vector and the grapevine, represented by two different cultivars, one very susceptible to the disease and the other scarcely susceptible. Background: Flavescence dorée is the most serious grapevine yellows disease in Europe. It is caused by phytoplasmas which are transmitted from grapevine to grapevine by the leafhopper Scaphoideus titanus. Differences in susceptibility among grapevine varieties suggest the existence of specific genetic features associated with resistance to the phytoplasma and/or possibly with its vector. In this work, RNA-Seq was used to compare early transcriptional changes occurring during the three-trophic interaction between the phytoplasma, its vector and the grapevine, represented by two different cultivars, one very susceptible to the disease and the other scarcely susceptible. The comparison of the transcriptomic responses highlighted both passive and active defense mechanisms against the vector and/or the pathogen in the scarcely-susceptible variety, as well as the capacity of the phytoplasmas to repress the defense reaction against the insect in the susceptible variety.
2019-06-13 | E-MTAB-7710 | biostudies-arrayexpress
Project description:Brochosomes are a unique coating on the integuments of Cicadellidae produced in specialized glandular sections of Malpighian tubules. However, knowledge of the protein composition of brochosome is very limited. In this study, transcriptomic and proteomic profiling was performed to characterize the protein composition of the brochosome in rice green leafhopper Nephotettix cincticeps. Brochosomes were collected from the forewings of leafhoppers using ultrasonic treatment allowing for more effective brochosome collection and shock treatment resulting in purer brochosomes . After combined proteomic and transcriptomic analysis, 12 putative major structural proteins of the brochosome (BSM) and 10 brochosome-associated proteins (BSAP) were identified. Each BSM has specific conserved motifs containing several cysteines cross-linked by disulfide bonds. BSAP, which may be loosely linked to the outer and inner surfaces of the brochosomes, might play an important role in the proper folding of the BSM and resisting pathogens. Apart from a few BSAPs associated with cyclase, homologs of BSM and BSAP were present exclusively in the insect family Cicadellidae rather than other Hemiptera species, suggesting that these proteins might be encoded by an orphan gene family specific to the Cicadellidae. This is the first study to identify and characterize the protein composition of the brochosome of N. cincticeps, which will provide a solid foundation for further studies of brochosome synthesis, function, and evolutionary origins.
2024-01-26 | PXD039863 | Pride
Project description:Phylogenomics of endemic Australian Ulopinae (Hemiptera: Cicadomorpha: Cicadellidae)
| PRJNA1031240 | ENA
Project description:Background: Differences in levels of gene expression among individuals are an important source of phenotypic variation within populations. Recent microarray studies have revealed that expression variation is abundant in many species, including Drosophila melanogaster. However, previous expression surveys in this species generally focused on a small number of laboratory strains established from derived populations. Thus, these studies were not ideal for population genetic analyses. Results: We surveyed gene expression variation in adult males of 16 D. melanogaster strains from two natural populations, including an ancestral African population and a derived European population. Levels of expression polymorphism were nearly equal in the two populations, but a higher number of differences was detected when comparing strains between populations. Expression variation was greatest for genes associated with few molecular functions or biological processes, as well as those expressed predominantly in males. Our analysis also identified genes that differed in expression level between the European and African populations, which may be candidates for adaptive regulatory evolution. Genes involved in flight musculature and fatty acid metabolism were over-represented in the list of candidates. Conclusions: Overall, stabilizing selection appears to be the major force governing gene expression variation within populations. However, positive selection may be responsible for much of the between-population expression divergence. The nature of the genes identified to differ in expression between populations may reveal which traits were important for local adaptation to the European and African environments. Keywords: Natural variation
2008-01-21 | GSE8843 | GEO